auto merge of #9235 : olsonjeffery/rust/newrt_file_io_1, r=thestinger

A quick rundown:

- added `file::{readdir, stat, mkdir, rmdir}`
- Added access-constrained versions of `FileStream`; `FileReader` and `FileWriter` respectively
- big rework in `uv::file` .. most actions are by-val-self methods on `FsRequest`; `FileDescriptor` has gone the way of the dinosaurs
- playing nice w/ homing IO (I just copied ecr's work, hehe), etc
- added `FileInfo` trait, with an impl for `Path`
  - wrapper for file-specific actions, with the file path always implied by self's value
  - has the means to create `FileReader` & `FileWriter` (this isn't exposed in the top-level free function API)
  - has "safe" wrappers for `stat()` that won't throw in the event of non-existence/error (in this case, I mean `is_file` and `exists`)
  - actions should fail if done on non-regular-files, as appropriate
- added `DirectoryInfo` trait, with an impl for `Path`
  - pretty much ditto above, but for directories
  - added `readdir` (!!) to iterate over entries in a dir as a `~[Path]` (this was *brutal* to get working)

...<del>and lots of other stuff</del>not really. Do your worst!

1 files changed, 6 insertions, 1 deletions

diff --git a/src/libstd/rt/rtio.rs b/src/libstd/rt/rtio.rs
index c9c402baaf0..d05a3a26169 100644
--- a/src/libstd/rt/rtio.rs
+++ b/src/libstd/rt/rtio.rs
@@ -18,7 +18,7 @@ use rt::uv::uvio;
 use path::Path;
 use super::io::support::PathLike;
 use super::io::{SeekStyle};
-use super::io::{FileMode, FileAccess};
+use super::io::{FileMode, FileAccess, FileStat};
 
 // XXX: ~object doesn't work currently so these are some placeholder
 // types to use instead
@@ -74,6 +74,11 @@ pub trait IoFactory {
         -> Result<~RtioFileStream, IoError>;
     fn fs_unlink<P: PathLike>(&mut self, path: &P) -> Result<(), IoError>;
     fn get_host_addresses(&mut self, host: &str) -> Result<~[IpAddr], IoError>;
+    fn fs_stat<P: PathLike>(&mut self, path: &P) -> Result<FileStat, IoError>;
+    fn fs_mkdir<P: PathLike>(&mut self, path: &P) -> Result<(), IoError>;
+    fn fs_rmdir<P: PathLike>(&mut self, path: &P) -> Result<(), IoError>;
+    fn fs_readdir<P: PathLike>(&mut self, path: &P, flags: c_int) ->
+        Result<~[Path], IoError>;
 }
 
 pub trait RtioTcpListener : RtioSocket {